All categories

2 years ago

If c(x) = 4x – 2 and d(x) = x^2+ 5x, what is (c circle d) (x)?

Mathematics

1 answer:

Xelga [282]2 years ago

7 0

Answer:

4x² + 20x - 2

Step-by-step explanation:

To evaluate (c ￮ d)(x), substitute x = d(x) into c(x)

c(x² + 5x)

= 4(x² + 5x) - 2

= 4x² + 20x - 2

You might be interested in

Anthony is buying a new skateboard. for $295. The sales tax is 4.75%, what will he pay in tax?

Anon25 [30]

Answer:

$4.75

Step-by-step explanation:

multiply 4.75% by 100 and then add/ move the decimal place 2 times

7 0

3 years ago

Show work please :)

fgiga [73]

Answer:

Step-by-step explanation:

90/100 = 54

Cross multiplying:

100 * 54 / 90

5400/90

4 0

2 years ago

What is the equation with a slope of 0 that has a point of (6,-11)?

lianna [129]

$\bf (\stackrel{x_1}{6}~,~\stackrel{y_1}{-11})~\hspace{10em} \stackrel{slope}{m}\implies 0 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-11)}=\stackrel{m}{0}(x-\stackrel{x_1}{6}) \\\\\\ y+11=0\implies y=-11$

5 0

3 years ago

On a given day, 36 of the 445 students in a school were absent. What was the appproximate absentee rate that day?

Nata [24]

Answer: The approximate absentee rate that day would be 8.09%.

Step-by-step explanation:

Since we have given that

Number of students who were absent = 36

Total number of students = 445

We need to find the approximate absentee rate that day :

Rate of absentee of that day would be

$\dfrac{\text{Number of absentee}}{\text{Total number of students}}\times 100\\\\=\dfrac{36}{445}\times 100\\\\=8.09\%$

Hence, the approximate absentee rate that day would be 8.09%.

5 0

3 years ago

One number is four times another number. If their sum is 95, what are the numbers?

nikdorinn [45]

Let x be one number and y be the other.

#1 - Set up a system of equations.
4x = y
x + y = 45

#2 - Solve the system by substitution.
x + (4x) = 45
5x = 45
x = 9

(9) + y = 45
y = 36

8 0

3 years ago

Read 2 more answers